| 摘要 |
PURPOSE:To obtain a circuit capable of setting a laser output at an optimum value in an optical disk player which can record signals on a disk. CONSTITUTION:A variable laser output circuit 12 is provided to vary the output of the laser built in the optical pickup 3. At the time of setting operation of the laser output, the circuit 12 records test signals in the trial writing region of the disk D while varying the laser output at every specified time interval. |
